Photographic-printing apparatus



A. M. TROUP.

PHOTOGRAPHIC PRINTINGAPPARATUS. APPLNIAUON FILED FEB. 18. I918.

Patented 1m. 2,1919.

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A. M. TROUP.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED FEB. I8. I9I8l Patented Dec. 2,1919.

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Alexander M. 7701/ I:- III I A. M. TROUP. PHOTOGRAPHIC PRINTING-APPARATUS.

APPLICATION FILED FEB. I8.19l8.-

3 SHEETS-SHEET 3.

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affozncq uniTnn STATES PATENT OFFICE.

ALEXANDER MILNE TROUP, 0F SANFORD, NORTH CAROLINA, ASSIGNOR OF ONE-HALF T0 JUNE U. GUNTER, OE SANFORD, NOR-TH CAROLINA.

PHOTOGRAPHIC-PRIN'IING APPARATUS.

Application filed February 18, 1918.

To all whom it may concern Be it known that l, ALEXANDER TVTILZQE TnoUr, citizen of the United States, residing at Sanford, in the county of Lee, State of North Carolina, have invented certain new and useful improvements in Photographic-Printing Apparatus, of which the following is a description, reference being had to the accompanying drawings, forming a part hereof. v I

This invention relates to a photographic printing apparatus and particularly to a construction adapted for use in rapidly printing opening and means for illuminat ing the boxing together with a nonactinic shutter mounted within the boxing to normally close said opening and a printing frame constructed and arranged to remove said shutter from the opening as it is placed in printing position.

A further object of the invention is to provide a novel and improved construction of printing frame in which the negative is supported upon a seat so that its inner face is flush with the lower edge of the frame, in connection with a contact board adapted to close the frame so that when said board opened the print paper held against the negative will be free to drop through the cut-away portion at the lower edge of the frame and thus avoid any handling thereof in its removal from the frame.

Other objects and advantages of the 'nvention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawings Figure 1 is an elevation of the inner face of the apparatus.

Fig. 2 is a vertical section on the line 2-2 of Fig. 3.

Specification of Letters Patent.

Patented Dec. 2, 1919'.

Serial No. 217,820.

Fig. 3 is a central horizontal section and Fig. 4 is a vertical section on the line of Fig. 3.

Like numerals refer to like parts in the several figures of the drawings.

The numeral lOdesignates a casing which may be of any desired constructionor con figuration and at the inner face thereof a shutter 11 is m vably mounted, preferably by means of spring hinges 12 at its lower edge, by which the shutter is normally retained in closed position. This shutter may be of any preferred character to prevent the transmission of active photographic rays to the faceof the printing frame 13, for instance it may be glazed with nonactinic material as at 14:.

The printing frame 13 may be-mounted on. the casin 10 during the printing operation for instance by means of a hinge or joint 15 at one side of the printing casing. This frame is provided with a seat or groove 16 of substantially equal thickness with a glass negative as indicated at 17 so that when the negative is seated therein it lies flush with the lower edge 18 of the frame. If desired the molding 19 about the frame is omitted at this edge for the purposes to be hereinafter described. The frame is also provided with a. closure board 20 having an operat ing handle 21. This board may be pivotally mounted upon the frame as at 22 and formed in sections connected by a hinge 23 as is usual in printing frames.

For the purpose of actuating the shutter to open the same as the printing frame is swung into position within its casing actuating means are provided to engage the shutter and preferably comprise the roller 24- mounted on the frame and adapted to engage an angular track 25 carried upon the inner face of the shutter by this contruction the inner movement of the printingframe swings downward the nonactinic shutter thus permitting the operation "to proceed.

i Vhen it is desired to print by artificial light a casing or boxing 26 may be provided to inclose the shutter and any suitable means for producing artificial light located therein as indicated at 27.

In the operation of the invention the shutter is normally held in closed position may then be easily placed upon the seat of the frame with its lower edge flush with the face of the frame as shown in Fig. 4. The usual printing paper is then inserted and the closure board placed in position as indicated by full lines in Fig. 3. Pressure upon the handle of this board carries the frame inward and an actuating roller thereon engages the track upon the shutter to swing the same into open position and permit the active printin rays of light to contact with the frame. en the frame is removed after the printing operation the shutter is automatically closed and as the board is swung outward into the outward position as shown in Fig. 3 the print paper drops directly downward through the cut-away ortion' of the frame at its lower edge. This permits of a very efiicient and rapid rinting operation and avoids the injury to t e print by contact of the fingers therewith in removing it from the frame. The invention may be used in the wall of a dark room or any other position, while if it is desired to print by artificial light the illuminating boxing surrounding the shutter prevents the action of this light except at such time as the frame is in pro or position for printing.

It wil be seen that th1s construction provides means by which the active light rays are cut off from the frame by the shutter at all times when the frame is not in printing position and the operator may thus conveniently handle the paper without damage of exposing the same before it is placed in printing position or after its removal therefrom.

While the invention has been described in connection with the use of a glass negative it is also adapted for printing from films in which case a clear glass may be mounted in the frame as a support for the film.

This invention provides a simple, eflicient and economicall constructed means for photographic printing and when ada ted for use of either professional photograp ers or amateurs.

What is claimed is 1. In a photographic printing ap aratus, a pivoted nonactinic shutter, a tracli thereon, a pivoted printing frame opposite said shutter and means upon said frame to engage said track to 0 en the shutter.

In a photograp ic printing apparatus, a pivoted nonactinic shutter, a trac thereon, a pivoted printing frame opposite said shutter and a roller mounted upon said frame to traverse said track in the opening movement of said shutter.

3. In a photographic printing ap aratus, a pivoted nonactinio shutter, a tracfi thereon, a pivoted printing frame opposite said shutter and a spring means for normally retaining the shutter in closed position.

4:. In a photographic printing apparatus a casing provided with a light opening, a shutter pivoted at one edge to cover said opening, spring means to normally close said shutter, a printing frame pivoted at one edgeopposite said opening, an angular track disposed upon said shutter, and an actuating runner to engage upon said track.

This speclfication signed and witnessed.

this fourth day of Feb. A. D. 1918.

ALEXANDER MILNE TROITP. In the presence of EDWARD R. BUoHAN, WARREN R. WILLIAMS. 

